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Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS)


Article Title: Design, Fabrication and Testing of a Charcoal Fueled Sealing Machine
by Akinnuli B.O., Abadariki S.O. and Fasan J. O.

Packaging of finished products in nylon bags either at rural or urban areas requires sealing process. Sealing process requires heat energy which can be generated by electricity or burning of biomass materials. Generally, rural electrification in Nigeria suffers backwardness while urban electrification is highly unreliable. This makes Nigeria economy unstable as failure directly affects production sectors. Since biofuel is cheap and are readily available, Hence the need to design and fabricate a sealing machine that can use biofuel (charcoal) as source of energy for its sealing operation. A charcoal fueled sealing machine was designed, fabricated and tested for nylon package sealing for rural use and places without regular supply of electricity. The machine consists of a heat pot made from mild steel sheet, supported by four mild steel angle iron stands. The major operating components for the sealing process are the upper fixed and lower movable jaws. The lower jaw operates through a foot pedal which opens the jaw when depressed and closed with the help of return springs when foot pressure is removed. The jaws can also accommodate nylons up to the length of 300mm for sealing. The size of the heating rectangular chamber is (0.09 x 0.115 x 0.05) m3, contained 7.02 Kg of charcoal, which liberated 82.27 KJ of heat for sealing. When 24.23 m3 of air was allowed to flow into the heating chamber. The lower jaw is easily displaced with small foot force of 0.028 KN on the operating pedal. For complete combustion of charcoal, sufficient air is allowed into the combustion chamber of the pot through the air control slide. The burnt ashes were collected on the ash tray. The capacity of the sealer is 90 sachets of pure water size (150 x 130) mm2 and 0.25 mm thick per hour with 86% efficiency. Compared this efficiency with the electricity powered and manually operated sealer made it a machine of 67.2 % relative efficiency. The selling (production and profit) price of this machine considering: materials, labour and machine hour, and working expenses amounted to Eleven thousand(N11,000.00) Naira only which is US$68.32 equivalent. This is based on current conversion rate of N161.00 per Dollar. The imported model of the same capacity is sold for twelve thousand five hundred (N12,000.00) naira which is equivalent to US$74.50. This give the purchaser of the locally made sealer a saving of one thousand five hundred (N1,500.00) naira only. This is equivalent to (US$9.32). In addition to this, the local model will be found useable both in rural and urban community but the imported model that uses electricity will only be useable in urban community only when the electricity to power it to generate required energy is available
Keywords: design, fabrication, testing, sealing machine, charcoal
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ISSN: 2141-7016

Editor in Chief.

Prof. Gui Yun Tian
Professor of Sensor Technologies
School of Electrical, Electronic and Computer Engineering
University of Newcastle
United Kingdom



Copyright © Journal of Emerging Trends in Engineering and Applied Sciences 2010